| William Chaumet | William Chauvenet | William Chen |
| William Cheruiyot Sigei | William Cheselden | William Cheseret |
| William Chester Lankford | William Cheswick | William Chetwood |
| William Chiaiese | William Child | William Child-Villiers, 10. Earl of Jersey |
| William Childs Westmoreland | William Chilton | William Ching |
| William Chinyama | William Chittick | William Chomsky |
| William Christian | William Christian Bouck | William Christian Heinrich Martensen |
| William Christian Krumbein | William Christie | William Christie (Astronom) |
| William Christie Gosse | William Christoffer Handy | William Christoph Zeise |
| William Christopher | William Christopher Atkinson | William Christopher Handy |
| William Christopher Stadie | William Christopher Zeise | William Chrystie Miller |
| William Church | William Church (Erfinder) | William Churchill de Mille |
| William Churchill deMille | William Claflin | William Claiborne |
| William Claiborne Dunlap | William Clarence Alves | William Clarence Eckstein |
| William Clarence Stokoe | William Clark | William Clark (Begriffsklärung) |
| William Clark (Bogenschütze) | William Clark (Politiker, 1774) | William Clark Brinkley |
| William Clark Cowie | William Clark Falkner | William Clark Gable |
| William Clark House | William Clark junior | William Clark Quantrill |
| William Clark Styron | William Clark, Baron Clark of Kempston | William Clarke |
| William Clarke (Musiker) | William Clarke (Politiker) | William Clarke (Radsportler) |
| William Clarke Cowie | William Clarke Quantrill | William Claude Dukenfield |
| William Claude Fields | William Claude McMahon | William Claude Rains |
| William Claxton | William Claxton (Regisseur) | William Clay Cole |
| William Clay Ford | William Clay Ford Junior | William Clay Ford senior |
| William Clay Ford Senior | William Clayton | William Clayton Anderson |
| William Cleary | William Cleaver Francis Robinson | William Cleite Boaventura |
| William Clem | William Clemens | William Cliff |
| William Clifford | William Clifford Munro Scott | William Clifford Munroe Scott |
| William Clifford Newman | William Clift | William Clifton Morris |
| William Clingan | William Clinton | William Clinton Olson |
| William Clive Bridgeman, 1. Viscount Bridgeman | William Clothier | William Clyburn Jr. |
| William Clyde Elliott | William Clyde Elliott II | William Clyde Hitchcock |
| William Coales | William Cobb | William Cobbett |
| William Coblentz | William Cochran | William Cochran (Sänger) |
| William Cochran (Schlagzeuger) | William Cochrane | William Cochrane, 1. Earl of Dundonald |
| William Cockayne | William Cockburn | William Cocke |
| William Cockerill | William Cockerill, Junior | William Cockerill, Senior |
| William Coddington | William Cody | William Cogswell |
| William Cohen | William Cohn | William Cohn (Kunsthistoriker) |
| William Cohn (Politiker) | William Cohn (Sprecher) | William Colby |
| William Cole | William Coleman | William Coleman Anderson |
| William Colenso | William Colepaugh | William Coley |
| William Colgate | William Collazo | William Collier junior |
| William Collins | William Collins & Sons | William Collins (Dichter) |
| William Collins (Maler) | William Collins (Politiker) | William Collins House |
| William Collins Whitney | William Collum | William Colvin |
| William Combe | William Compton | William Compton (Begriffsklärung) |
| William Compton, 1. Earl of Northampton | William Comstock | William Comyn |
| William Comyn (Bischof) | William Comyn, Earl of Buchan | William Conant Church |
| William Condon | William Condon (Pirat) | William Congreve |
| William Congreve (Autor) | William Congreve (Erfinder) | William Conklin |
| William Conley | William Connell | William Connolley |
| William Connolly | William Connor | William Connor (Pastor) |
| William Connor Wright | William Conrad | William Conrad Abhau |
| William Constantine Culbertson | William Control | William Conway |
| William Conway (Erzbischof) | William Conybeare | William Conyers |
| William Conyers Herring | William Conyers of Hornby | William Conyers, 1. Baron Conyers |
| William Conyngham Greene | William Cook | William Cook (Mathematiker) |
| William Cook House | William Cooke | William Cooke (Politiker, um 1537) |
| William Cookworthy | William Coolidge | William Cooper |
| William Cooper (Bürgerrechtler) | William Cooper (Richter) | William Cooper (Segler) |
| William Cooper Nell | William Copeland Borlase | William Copeland Trimble |
| William Copley | William Corbett | William Corbett (Komponist) |
| William Corbett (Politiker) | William Corbin | William Corgan |
| William Corin | William Corkine | William Cornelius Van Horne |
| William Cornwallis | William Cornwallis Harris | William Cornysh |
| William Cosby | William Cosentini | William Cosgrove |
| William Cost Johnson | William Costello | William Cotter Maybury |
| William Cotton | William Cotton (Bankier) | William Cotton (Erfinder) |
| William Cottrell | William Cottrell (Drehbuchautor) | William Cottrell (Physiker) |
| William Cottrill | William Cotts, 1. Baronet | William Councilman |
| William Count Basie | William Couper | William Courtenay |
| William Courtney | William Courtright | William Cowan |
| William Cowher | William Cowley | William Cowper |
| William Cowper (Dichter) | William Cowper (Mediziner) | William Cowper Smith |
| William Cowper, 1. Earl Cowper | William Cowper-Temple, 1. Baron Mount Temple | William Cowsill |
| William Cox | William Cox (Gouverneur) | William Cox (Leichtathlet) |
| William Cox (Pionier) | William Cox Ellis | William Cox Redfield |
| William Coxe | William Coxe junior | William Coyle |
| William Coyne | William Crabtree | William Craig |
| William Craig (Logiker) | William Craig Smith | William Craighill |
| William Craigie | William Craik | William Cramp & Sons |
| William Cramp and Sons | William Cranch Bond | William Crane Carl |
| William Craner | William Crapo Durant | William Crawford |
| William Crawford (Admiral) | William Crawford (Offizier) | William Crawford (Politiker) |
| William Crawford Dunlap | William Crawford Gorgas | William Crawford Sherrod |
| William Crawford Williamson | William Crawley-Boevey | William Crean |
| William Creek | William Creighton | William Criss |
| William Croft | William Croft (Linguist) | William Cronjager |
| William Cronk | William Cronon | William Crooke |
| William Crookes | William Croone | William Cropper |
| William Crosby | William Crosby Dawson | William Crosson Feazel |
| William Crotch | William Crouch | William Crow |
| William Crowe | William Crowninshield Endicott | William Crowther |
| William Crozier | William Crozier (General) | William Cruickshank |
| William Crutchfield | William Cubitt | William Cudmore McCullagh Lewis |
| William Cuffe | William Cuffe, 4. Earl of Desart | William Culbertson |
| William Culham Woodward | William Cullen | William Cullen (Begriffsklärung) |
| William Cullen (Politiker) | William Cullen Bryant | William Cullen Bryant Homestead |
| William Cullen, Baron Cullen of Whitekirk | William Cullom | William Cumback |
